Super-retarded concrete

• Main Authors: CHANG ZHIQI, KANG XUESONG, GUO DAREN, CHANG FENG, LI ZHIJIN, MA LIANBAO
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2018
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a super-retarded concrete, which comprises the following components by weight: 165-175 parts of water, 160-260 parts of cement, 56-64 parts of mineral powder, 80-160 parts of fly ash, 835-841 parts of sand, 980-950 parts of stone, and 6-8.5 parts of an admixture. The admixture comprises the following components by weight: 10-14 parts of a retarder, and 35-41 parts of a water reducing agent. According to the invention, under the premise of ensuring enough later strength of concrete, the setting time is greatly prolonged, and at the same time segregation and bleeding phenomena do not occur before and after concrete pouring. 本实发明公开了种超缓凝混凝土，包括下述以重量份表示的组分：水165-175份，水泥160-260份，矿粉56-64份，粉煤灰80-160份，砂子835-841份，石子980-950份，外加剂6-8.5份；所述外加剂包括下述以重量份表示的组分：缓凝剂10-14份，减水剂35-41份。本发明在保证混凝土有足够的后期强度的前提下大大延长凝结时间，同时混凝土灌注前后没有离析、泌水现象。